From patchwork Wed Apr 14 08:38:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hsin-Yi Wang X-Patchwork-Id: 421322 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 862FFC43616 for ; Wed, 14 Apr 2021 08:40:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 699FE613C4 for ; Wed, 14 Apr 2021 08:40:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350211AbhDNIkp (ORCPT ); Wed, 14 Apr 2021 04:40:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41662 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350209AbhDNIjL (ORCPT ); Wed, 14 Apr 2021 04:39:11 -0400 Received: from mail-pj1-x1036.google.com (mail-pj1-x1036.google.com [IPv6:2607:f8b0:4864:20::1036]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 00CD3C061344 for ; Wed, 14 Apr 2021 01:38:22 -0700 (PDT) Received: by mail-pj1-x1036.google.com with SMTP id b8-20020a17090a5508b029014d0fbe9b64so12105906pji.5 for ; Wed, 14 Apr 2021 01:38:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=plmO0AdMl820K1E1EewPUIFFIYm0UYQ8GWMNCMfiNMs=; b=Y3NqiCd5rr7+LyVYEGOOOX4NYDJW2EOYrkF/TrtNRNqln3ctoJGKO0I0T0L0ApmQ3K N06EZWoCDwWvTUJ2L4ngADfH2WBuwxd73m6NYcBOtrsQQI3F9MRZMHIb1Y80f3kIAKNC j1j23aHDf+PkiUmZYXCsRhdPo49p+brePolV8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=plmO0AdMl820K1E1EewPUIFFIYm0UYQ8GWMNCMfiNMs=; b=j2CgcwUm+vtH3GHgfH1ysE4V24GrMEizA6mdhBV4ti1i+ZLuDgJRrEsG6a6XyLFpMM TkHU9dIXTOWzxtqauSYIo7rvdywPl8rOLXuP9iget/hAf9SWXgddZuXxTmdPYS+yTXUY JJOb0glKE1OFSfh1gBHwz9YCGlNvqcztB+Tia63WlJqNTh53H4P/zrOnyGefk5QXHad/ 53AgCjhe6skz/LTVVRVgM0u1Yi9tnDm3sk05yN42jx7fp8c/ewDPTnImE3MccZVM9VF8 2pO6Wj4hWuxS7LrTUU4BbtRn77Vn5PmdMV0Hq0Rb3cNg7Leb8cRzu06RKghTIf7ewY/l CMLw== X-Gm-Message-State: AOAM532jcV3avte/RziSLmPD58q8WHwKJpC+6E6lKrRP3qCEaqLrzvNI RVq4mZtG7Vo072+WWj8e93DPrA== X-Google-Smtp-Source: ABdhPJzlShITTMJUXTCs2zEaR/hzAirHlP9c/EZQo05/1A8Fi0UiYdumG++22lWtt4vLwGQbGoVQew== X-Received: by 2002:a17:90b:8d3:: with SMTP id ds19mr1590139pjb.197.1618389502547; Wed, 14 Apr 2021 01:38:22 -0700 (PDT) Received: from hsinyi-z840.tpe.corp.google.com ([2401:fa00:1:10:bae3:4af0:9792:1539]) by smtp.gmail.com with ESMTPSA id g24sm8901582pfh.164.2021.04.14.01.38.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Apr 2021 01:38:22 -0700 (PDT) From: Hsin-Yi Wang To: Wolfram Sang , Matthias Brugger , Rob Herring , Bartosz Golaszewski Cc: linux-i2c@vger.kernel.org, Qii Wang , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Mark Brown , Marek Szyprowski , Bibby Hsieh , Arnd Bergmann Subject: [PATCH v18 3/5] i2c: mediatek: mt65xx: add optional vbus-supply Date: Wed, 14 Apr 2021 16:38:07 +0800 Message-Id: <20210414083809.1932133-4-hsinyi@chromium.org> X-Mailer: git-send-email 2.31.1.295.g9ea45b61b8-goog In-Reply-To: <20210414083809.1932133-1-hsinyi@chromium.org> References: <20210414083809.1932133-1-hsinyi@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org Add vbus-supply which provides power to SCL/SDA. Pass this regulator into core so it can be turned on/off for low power mode support. Signed-off-by: Hsin-Yi Wang --- drivers/i2c/busses/i2c-mt65xx.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index 2ffd2f354d0a..82f2b6716005 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c @@ -1215,6 +1215,13 @@ static int mtk_i2c_probe(struct platform_device *pdev) i2c->adap.quirks = i2c->dev_comp->quirks; i2c->adap.timeout = 2 * HZ; i2c->adap.retries = 1; + i2c->adap.bus_regulator = devm_regulator_get_optional(&pdev->dev, "vbus"); + if (IS_ERR(i2c->adap.bus_regulator)) { + if (PTR_ERR(i2c->adap.bus_regulator) == -ENODEV) + i2c->adap.bus_regulator = NULL; + else + return PTR_ERR(i2c->adap.bus_regulator); + } ret = mtk_i2c_parse_dt(pdev->dev.of_node, i2c); if (ret)